1 files changed, 37 insertions, 0 deletions
diff --git a/src/mbgl/style/custom_tile_loader.hpp b/src/mbgl/style/custom_tile_loader.hpp
new file mode 100644
index 0000000000..6f390cfe35
--- /dev/null
+++ b/src/mbgl/style/custom_tile_loader.hpp
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <mbgl/style/sources/custom_vector_source.hpp>
+#include <mbgl/actor/scheduler.hpp>
+#include <mbgl/tile/tile_id.hpp>
+#include <mbgl/actor/actor_ref.hpp>
+
+#include <tuple>
+#include <map>
+
+namespace mbgl {
+namespace style {
+
+using SetTileDataFunction = std::function<void(const mapbox::geojson::geojson&)>;
+
+class CustomTileLoader : private util::noncopyable {
+public:
+
+    using OverscaledIDFunctionTuple = std::tuple<uint8_t, int16_t, ActorRef<SetTileDataFunction>>;
+
+    CustomTileLoader(const TileFunction& fetchTileFn, const TileFunction& cancelTileFn);
+
+    void fetchTile(const OverscaledTileID& tileID, ActorRef<SetTileDataFunction> callbackRef);
+    void cancelTile(const OverscaledTileID& tileID);
+
+    void removeTile(const OverscaledTileID& tileID);
+    void setTileData(const CanonicalTileID& tileID, const mapbox::geojson::geojson& data);
+
+private:
+    TileFunction fetchTileFunction;
+    TileFunction cancelTileFunction;
+    std::unordered_map<CanonicalTileID, std::vector<OverscaledIDFunctionTuple>> tileCallbackMap;
+    std::map<CanonicalTileID, std::unique_ptr<mapbox::geojson::geojson>> dataCache;
+};
+
+} // namespace style
+} // namespace mbgl